V.K.
Though usually you do have to just wait things out with kids and let them do it on their own schedule, I'd have to disagree with the person who responded just before me about your attitude. I think you're approaching it the right way. And the fact that you're asking for advice shows that you are not getting an "attitude" about it. 14 months is quite late for your son to be drinking out of a sippy cup and the fact that you're determined to change that is good. But maybe you just need to wean him off the bottle instead of the all or nothing approach. Start by insisting he have 1 sippy cup with a meal. If he cries and throws a fit just ignore him until he calms down. It sounds like he's just trying to show his power. Insist that he only have a cup at whatever meal and don't give him a bottle until the next snacktime or meal. If he seems to be thirsty in the meantime give him some water in the sippy cup. Then slowly start doing that at more meals. Soon he'll be drinking exclusively out of a sippy cup.